Lap desk



FIG. 1 is a perspective view of an alternative embodiment of our design shown in FIG. 1;

FIG. 2 is a top view of the design of FIG. 7;

FIG. 3 is a front view of the design of FIG. 7;

FIG. 4 is a left side view of the design of FIG. 7, the right side view being identical;

FIG. 5 is a back view of the design of FIG. 7; and,

FIG. 6 is a bottom view of the design of FIG. 7. 

The ornamental design for a lap desk, as shown and described. 